Cognomen Jiwoon (Jiwoon 
) , in the world, is a rare last name. The family name Jiwoon is habitual in South Korea, where it is a rare surname, Hungary, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, it is commonest in South Korea, China, and Thailand. More prevalently, Jiwoon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jiwoon | Malaysia, China, Thailand, South Korea, United States |